It is a flaw in our testing setup that this calling convention breach is
not caught by the automated testing. I will fix both bugs. :-)
I have now pushed a fix for the mainline repo. Testing would be
appreciated!
Improving test suite calling conventions checks (through
tests/x86call.asm) still needs to be done.
Unfortunately the same issue might affect released versions of GMP. It
is not immediately clear, as all problem code lives in x86_64/fastsse,
code which is then explicitly included from CPU specific subdirs.
This is still pending.
--
Torbjörn
Please encrypt, key id 0xC8601622